It looks like noto got an update in the background and 
our initial set-up won't work any more: We'll have to
re-install pNbody.

Here's a step-by-step guide:

1)  Log in to noto and open up a bash terminal.

2)  We need to create a new virtual environment for python.
    To do this, run
    $ my_venvs_create pNbody_env
    $ my_venvs_activate pNbody_env

    Note: You'll have to run the `my_venvs_*` commands above (and below)
    manually in the terminal. Unfortunately, they can't be scripted.

3)  Now we re-install pNbody.

3.1)    If you still have the data we downloaded with the originally
        provided script (the directory ~/pNbody), navigate into it:
        $ cd ~/pNbody
        and verify that you still have the files there:
        $ ls .

        The output should look like

        > (pNbody_env) ch-epfl-304160@noto:~ $ cd ~/pNbody/
        > (pNbody_env) ch-epfl-304160@noto:~/pNbody $ ls
        > Doc          config           scripts
        > MANIFEST     examples         setup.py
        > MANIFEST.in  fonts            src
        > README.md    format.sh        test
        > TODO         pNbody
        > build        pNbody.egg-info

        (without the leading '>')

        If this is the case, run

        $pip3 install -e .

        and wait for pNbody to install. Otherwise, proceed with 3.2)

3.2)    If you don't have the pNbody directory (~/pNbody) or the files
        therein are missing, you'll need to download it again.
        First remove everything you have in ~/pNbody:

        $ rm -rf ~/pNbody

        and then download it again:
        $ cd ~
        $ git clone https://gitlab.com/revaz/pNbody.git

        and then install it again:
        $ cd pNbody
        $ pip3 install -e .

4)  (Optional)
    If you plan on using jupyter notebooks, you'll also have to 
    install a kernel that includes pNbody:

    $my_kernels_create py3_pNbody "Py3 pNbody"

5)  (Optional)
    If you want to use a different virtual environment, or just to
    deactivate the current one, use
    $my_venvs_deactivate

    Note: If you do this, you won't be able to use pNbody until you
    re-activate the pNbody environment again. You can do this by
    running

    $ my_venvs_activate pNbody_env

    Note: It's possible that on a new login, you'll have to activate
    the pNbody environment again. Use the command above to do that.